Thermometer Log vs HotTrain
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Thermometer Log
Easily record and track your body temperature with this intuitive app. View historical data, analyze trends with graphs, and export your records. Supports both Celsius and Fahrenheit units.
- Easy temperature recording
- Celsius and Fahrenheit support
- Weekly, monthly, and 3-month graphs
- Average temperature display
- Data correction and addition
- CSV export
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This app is an app that allows you to easily record your body temperature. You can record many times a day! In addition, two units of body temperature can be used: Celsius (℃) and Fahrenheit (℉). Just move the scale on the home screen left and right to set the body temperature, and tap the save button to easily record the body temperature and save time! Since it can be recorded many times a day, it is ideal for recording body temperature in the morning and at night. On the "Analysis" screen, a graph of weekly, monthly, and 3-month body temperature is displayed. In addition, the average body temperature for that period is displayed. You can check the data by tapping the graph. On the "History" screen, the record of the body temperature of the year and month selected in the upper right of the screen is displayed. You can correct the body temperature data by double tapping the data. If you forget to record the body temperature data, you can add it by tapping the "Add" button on the upper left of the screen. When you tap the "Add" button, the input screen will be displayed. Select and add the date, time, and body temperature. By tapping the "Export CSV file" button, you can convert the history data to a CSV file and attach it to an email for export. On the "Settings" screen, you can set the unit of body temperature. You can also set the day of the week at the beginning of the week in the weekly graph. You can choose to start on Monday or Sunday. In the free version, you can check the body temperature record for up to one week. If you have an unlimited recording period and want to check monthly or 3 month data, please consider purchasing the premium version in the app. ---------------------- Terms of Service and Privacy Policy: https://akikibai-labolatory.jimdofree.com/privacy-policy-log-apps/
HotTrain
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【 What set is this? How long have I rested? How many sets and how much weight did I do last week? 】 【 I can't remember at all! 】 That's why I built HotTrain. I tried using my phone's notes — too messy. Scrolling through history was even worse. So I just wrote an app myself. For me, and for anyone who needs the same thing. It's not a workout video app. It doesn't push training content to you. And no ads. It does one thing: helps you log your training, clearly and simply. 【 How to use it? 】 Create a plan. "Chest Day", "Back Day", "Leg Day" — whatever you want. Add exercises: dumbbell bench press, squats, deadlifts — anything goes. Log each exercise with sets, reps, weight, and muscle group. So you can check your volume later. On training day, open the plan, tap Start Workout, and log set by set. Rest timer counts down between sets. It alerts you when time's up. No need to watch the clock. When you're done, it shows total workout duration and total rest time. Every exercise has its own history. Tap to see the curves: weight, sets, reps. Going up? Making progress? See it at a glance. 【 Training status, clear at a glance 】 Calendar page: which days you trained, which days you skipped, which days you didn't finish. Stats page: completion rate by month, year, or cumulative. Summary page: total training hours, trend over time. Flip through them, and you'll know exactly where you stand. 【 A few extra tools 】 Stopwatch & countdown timer — use them during workouts Swap plans on the fly — don't feel like today's plan? Switch to another day's Body metrics — track weight, body fat %, BMI Multiple themes — change the look anytime Cloud backup — switch devices without losing data Share plans — generate a code, friends paste it and import Data stays local. Cloud backup is optional. No upload, no loss. If you train on your own and want to train smarter, give it a try. Terms: https://any.coop/ABGfCrSsPDwpLGmrjqHRzwp2ixRxdyJe6Fm8yWXLzEgJoa1x/hot-train-user-service-agreement# Privacy: https://any.coop/ABGfCrSsPDwpLGmrjqHRzwp2ixRxdyJe6Fm8yWXLzEgJoa1x/statement-about-hot-train-and-privacy#
Screenshots
Verdict
The clearest difference is ads: HotTrain at none against Thermometer Log's shown. HotTrain also leads on update cadence (every 2 weeks vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Thermometer Log sells 1 one-off in-app purchase and HotTrain sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Thermometer Log ships an update every 2 months, HotTrain every 2 weeks. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.
| Parameter | Thermometer Log | HotTrain |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (6 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Kei Suefuji | 金明 陈 |
In-app purchases
Thermometer Log
- PREMIUM$4.99
HotTrain
- Premium Monthly$4.991 Month
- Premium Yearly$24.991 Year
- Lifetime$29.99









